crc.c: "preheat" the checksum.

Not doing so lets a checksum succeed on (all zeros) empty memory.
2012-10-14 23:17:35 +02:00 · 2012-10-14 23:17:35 +02:00 · 8e8a3da7fb
parent a2185a4154
commit 8e8a3da7fb
1 changed files with 1 additions and 1 deletions
--- a/crc.c
+++ b/crc.c
@ -29,7 +29,7 @@
 	uses avr-libc's optimised crc16 routine
 */
 uint16_t	crc_block(void *data, uint16_t len) {
-	uint16_t	crc = 0;
+	uint16_t	crc = 0xfeed;
 	for (; len; data++, len--) {
 		crc = _crc16_update(crc, *((uint8_t *) data));
 	}